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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] libxc: set CPUID topology leaf as unsupported for PV guests
On 14/07/11 14:30, Keir Fraser wrote: > On 14/07/2011 12:50, "David Vrabel" <david.vrabel@xxxxxxxxxx> wrote: > >> libxc: set CPUID topology leaf as unsupported for PV guests >> >> The result of a CPUID Extended Topology Enumeration leaf for PV guests >> is invalid as the level in ECX is ignored. This can cause some guests >> to loop endlessly when trying to enumerate the topology. >> >> Since the physical topology isn't useful to PV guests set the topology >> leaf as unsupported. > > For future reference, you also need to modify > xen/arch/x86/traps.c:pv_cpuid(), for dom0. Looking at the code it looks like dom0 would at least see valid data for the the topology leaf. But I guess the info makes no sense to dom0 as well as domU guests. Patch sent if you've not already fixed it up. David _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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